用Visual C#编写屏幕保护程序

Visual C#是微软公司推出的新一代程序开发语言,是微软.Net框架中的一个重要组成部分。屏幕保护程序是以scr为扩展名的标准Windows可执行程序。屏幕保护程序不仅可以延长显示器的使用寿命,还可以保护私人信息。本文向大家介绍一个.Net平台上用C#编写的一个动态文本及图形的屏幕保护程序。

  一、具体实现步骤:

  (1)在Visual Studio.Net下新建一个C#的Windows应用程序工程,不妨命名为screen_saver。

  (2)现在我们来设计程序的主界面:

  先将窗体的Name属性设置为screen、Text属性设置为空,BackColor属性设置为Black、Size属性设置为(800, 600)、 ControlBox、MaximizeBox、MinimizeBox、ShowInTaskbar属性设置均为false、 FormBorderStyle属性设置为None。再往窗体上添加Label控件、PictureBox控件、Timer控件各一个。将Label控件的Name设置为word、Text属性设置为空;将PictureBox控件的Name设置为picture1、Image设置为一个预知图片;将 Timer控件的Name设置为timerSaver、Enabled 属性设为true、Interval属性设为5。

  (3)现在我们开始编写完整程序代码部分:
//导入使用到的名称空间

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
file://

    namespace screen_saver
    {
///
/// Form1 的摘要说明。
///

public class screen : System.Windows.Forms.Form
{
  file://加入私有成员变量

  private System.ComponentModel.IContainer components;
  private int iSpeed = 2;
  private string str="福建南纺股份公司计算机中心";
  file://定义文本字体及大小

  private System.Drawing.Font TextStringFont = new System.Drawing.Font ("宋体”, 10,System.Drawing.FontStyle.Bold);

  private Color TextStringcolor =System.Drawing.Color.Yellow; file://文本字体颜色

  private int iDistance;
  private int ixStart= 0;
  private int iyStart= 0;
  private int speed;
  private int x1,y1;
  int width1,height1;
  private System.Windows.Forms.Timer timerSaver;  file://计时器控件

  private System.Windows.Forms.PictureBox picture1; file://图形控件

  private System.Windows.Forms.Label word; file://文本显示控件

///
/// 必需的设计器变量。
///

  public screen()
  {
  file://
  // Windows 窗体设计器支持所必需的

  file://

   InitializeComponent();
   word.Font=TextStringFont;
   word.ForeColor=TextStringcolor;
   System.Windows.Forms.Cursor.Hide(); file://隐藏光标

   file://
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码

   file://

  }
  ///
  /// 清理所有正在使用的资源。
  ///

  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }
  #region Windows Form Designer generated code
  ///
  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  ///

 

 

private void InitializeComponent() file://初始化程序中使用到的组件

  {
   this.components = new System.ComponentModel.Container();
   System.Resources.ResourceManager resources = new   system.Resources.ResourceManger(typeof(screen));      
   this.word = new System.Windows.Forms.Label();
   this.timerSaver = new System.Windows.Forms.Timer(this.components);
   this.picture1 = new System.Windows.Forms.PictureBox();
   this.SuspendLayout();
   //
   // 设置文本显示控件(word)属性

   this.word.ForeColor = System.Drawing.Color.Yellow;
   this.word.Location = new System.Drawing.Point(624, 8);
   this.word.Name = "word";
   this.word.Size = new System.Drawing.Size(168, 16);
   this.word.TabIndex = 0;
   this.word.Visible = false;
   //
   // 设置计时器控件(timerSaver)属性

   this.timerSaver.Enabled = true;
   this.timerSaver.Interval = 5;
   this.timerSaver.Tick += new System.EventHandler(this.timerSaver_Tick);
   //
   // 设置图片控件(picture1)属性

   this.picture1.Image = ((System.Drawing.Bitmap)(resources.GetObject("picture1.Image")));
   this.picture1.Location = new System.Drawing.Point(800, 600);
   this.picture1.Name = "picture1";
   this.picture1.Size = new System.Drawing.Size(304, 224);
   this.picture1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
   this.picture1.TabIndex = 1;
   this.picture1.TabStop = false;
   //
   // 设置窗体(screen)属性

   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.BackColor = System.Drawing.Color.Black;
   this.ClientSize = new System.Drawing.Size(800, 600);
   this.ControlBox = false;
   this.Controls.AddRange(new System.Windows.Forms.Control[] {this.picture1,this.word});
   this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
   this.KeyPreview = true;
   this.MaximizeBox = false;
   this.MinimizeBox = false;
   this.Name = "screen";
   this.ShowInTaskbar = false;
   this.StartPosition = System.Windows.Forms.FormStartPosition.Manual;
   this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
   file://键盘按下响应事件

   this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.screen_KeyDown);
             file://鼠标按下响应事件
 
   this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.screen_MouseDown);
   file://窗体启动调用事件

   this.Load += new System.EventHandler(this.Form1_Load);
             file://鼠标移动响应事件

   this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.screen_MouseMove);
   this.ResumeLayout(false);
  }

#endregion
  ///
  /// 应用程序的主入口点。
  ///

  [STAThread]
  static void Main(string[] args)
  {
   if(args.Length==1)
    if(args[0].Substring(0,2).Equals("/c"))
    {
     MessageBox.Show("没有设置项功能","C# Screen Saver");
     Application.Exit();
    }
    else if(args[0]=="/s")
    Application.Run(new screen());
   else if(args[0]=="/a")
   {
    MessageBox.Show("没有口令功能","C# Screen saver");
    Application.Exit();
   }
   else
   Application.Run(new screen());
  }
  private void Form1_Load(object sender, System.EventArgs e)
  {
   speed=0;
   System.Drawing.Rectangle ssWorkArea=System.Windows.Forms.Screen.GetWorkingArea(this);
   file://屏幕显示区域

   width1=ssWorkArea.Width; file://屏幕宽度

   height1=ssWorkArea.Height; file://屏幕高度

  }
  private void timerSaver_Tick(object sender, System.EventArgs e) file://计时器响应事件

  {
   word.Visible=true;
   word.Text=str;
   word.Height=word.Font.Height; file://设置文本的高度

   word.Width=word.Text.Length*(int)word.Font.Size*2; file://设置文本的宽度

   PlayScreenSaver();
  }

private void PlayScreenSaver() file://自定义函数

  {
   file://下面设置文本显示框的位置坐标

   word.Location =new System.Drawing.Point(width1-iDistance,word.Location.Y);
   word.Visible=true; file://设置为可见

   iDistance+=iSpeed;
   if(word.Location.X<=-(word.Width))
   {
    iDistance=0;
    if(word.Location.Y==0)
     word.Location=new System.Drawing.Point(word.Location.X,height1/2);
    else if(word.Location.Y==height1/2)
     word.Location=new System.Drawing.Point(word.Location.X,height1-word.Height);
    else
     word.Location=new System.Drawing.Point(word.Location.X,0);
   }
   file://下面是计算图片框移动坐标

   speed++;
   if(speed<=2*height1)
   {
    x1=System.Math.Abs(width1-speed);
    y1=System.Math.Abs(height1-speed);
   }
   else if(speed>2*height1 && speed<=2*width1)
   {
    x1=System.Math.Abs(width1-speed);
    y1=System.Math.Abs(height1-(speed-speed/height1*height1));
   }
   else if(speed>2*width1 &&speed<=3*height1)
   {
    x1=System.Math.Abs(width1-(speed-speed/width1*width1));
    y1=System.Math.Abs(height1-(speed-speed/height1*height1));
   }
   else if(speed>3*height1 && speed<4*height1)
   {
    x1=System.Math.Abs(width1-(speed-speed/width1*width1));
    y1=System.Math.Abs(speed-speed/height1*height1);
   }
   else if(speed>=4*height1 && speed<5*height1)
   {
    x1=System.Math.Abs(speed-speed/width1*width1);
    y1=System.Math.Abs(height1-(speed-speed/height1*height1));
   }
   else if(speed>=5*height1 && speed<4*width1)
   {
    x1=System.Math.Abs(speed-speed/width1*width1);
    y1=System.Math.Abs(speed-speed/height1*height1);
   }
   else if(speed>=4*width1 && speed<6*height1)
   {
    x1=System.Math.Abs(width1-(speed-speed/width1*width1));
    y1=System.Math.Abs(speed-speed/height1*height1);
   }
   else if(speed>=6*height1 && speed<5*width1)
   {
    x1=System.Math.Abs(width1-(speed-speed/width1*width1));
    y1=System.Math.Abs(height1-(speed-speed/height1*height1));
   }
   else if(speed>=5*width1 && speed<7*height1)
   {
    x1=System.Math.Abs(speed-speed/width1*width1);
    y1=System.Math.Abs(height1-(speed-speed/height1*height1));
   }
   else if(speed>=7*height1 && speed<6*width1)
   {
    x1=System.Math.Abs(speed-speed/width1*width1);
    y1=System.Math.Abs(speed-speed/height1*height1);
   }
   if(speed==6*width1)
   speed=0;
   picture1.Location=new System.Drawing.Point(x1,y1);
  }
  private void StopScreenSaver() file://停止屏幕保护程序运行

  {
   System.Windows.Forms.Cursor.Show();
   timerSaver.Enabled=false;
   Application.Exit();
  }
  private void screen_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e) 
  file://鼠标移动事件

  {
   if(ixStart==0 && iyStart==0)
   {
    ixStart=e.X;
    iyStart=e.Y;
    return;
   }
   else if(e.X!=ixStart||e.Y!=iyStart)
   StopScreenSaver();
  }
  private void screen_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
  file://鼠标按下事件

  {
   StopScreenSaver(); file://停止运行屏幕保护程序

  }
  private void screen_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e) 
  file://键盘按下事件

  {
   StopScreenSaver(); file://停止运行屏幕保护程序

  }
}
}

 

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